Contents  on 17 June '08

Resources:

The latest A/CC news is available via framed access, RSS news feed RSS news feed, or redirection. - Note: A/CC has a main Web site and also a backup site with its own duplicate RSS news feed.

Navigation tips: Use the << and >> arrows on the menus for each regular section (Observers, Risks, etc.) to move to the previous and next day's news for that section. Use the Index menu item to access specific days through a calendar interface. And use the all-up news archive to access news from any time since A/CC began in early 2002. To keep track of what's new each day, watch the Chronology section.

NEOCP Activity  on 17 June '08

The MPC's NEO Confirmation Page has 1 listing: 1 updated

When last checked at 2357 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had one updated listing. This was a "one nighter."

To learn how observers use the NEOCP, see the Practical guide on how to observe NEOCP object by Birtwhistle et al. at Suno Observatory.

New MPECs  on 17 June '08

Minor Planet Electronic Circulars

As of last check at 2357 UTC, there have been three MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2008-M11 - "15:49 UT" - Comets C/2008 J13, 2008 J14, 2008 J15, 2008 J16 (SOHO)


MPEC 2008-M10 - "15:41 UT" - Comets C/2008 H9, 2008 J10, 2008 J11, 2008 J12 (SOHO)


<< DOU on 17 June '08 >>  MPEC 2008-M09 - "06:08 UT" - Daily Orbit Update

Observers  on 17 June '08

Eight observing facilities appear in today's MPECs.

CodeObserver / observatory
H55Astronomical Research Obs. (ARO) in Illinois, 8 in MPEC 2008-M09 -- 2008 LH2, 2008 JT35, 2008 JR26, 2008 JQ14, 2008 HS3, 2008 HO3, 2008 GV20, 2005 TU45
127Bornheim Obs. in Germany, 6 in MPEC 2008-M09 -- 2008 HW1, 2008 DE, 2005 NB7, 86667, 184266, 11398
703Catalina Sky Survey (CSS) in Arizona, 2 in MPEC 2008-M09 -- 2008 LW16, 1917
F656Richard Miles in England via Faulkes Telescope North in Hawaii, 1 in MPEC 2008-M09 -- 2008 LV16
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2008-M09 -- 2008 LA
2492LASCO Coronagraph 2 (SOHO C2) aboard the Solar & Heliospheric Obs. (SOHO) in Earth-Sun L1 HALO orbit, 8 in MPECs 2008-M10 & 2008-M11 -- C/2008 J16, C/2008 J15, C/2008 J14, C/2008 J13, C/2008 J12, C/2008 J11, C/2008 J10, C/2008 H9
2493LASCO Coronagraph 3 (SOHO C3) aboard the Solar & Heliospheric Obs. (SOHO) in Earth-Sun L1 HALO orbit, 2 in MPECs 2008-M10 & 2008-M11 -- C/2008 J14, C/2008 J12
6735Jim Young via Table Mtn. Obs. in southern California, 1 in MPEC 2008-M09 -- 2008 HF2
F85Tiki Obs. in Tahiti, 1 in MPEC 2008-M09 -- 2003 FU3
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 17 June '08

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2357 UTC)
See the CRT page for a list of all objects rated recently as risks and our ephemerides page for a list of risk-listed objects under current observation.
Note that the time horizon for JPL is 100 years from today and for NEODyS is usually the year 2090.
For the latest official risk assessments, and for explanations of the terminology, see the JPL NEO Program Sentry and NEODyS CLOMON (backup) risk pages.
0000NNN000

Object

Risk
Monitor
When
Noted
UTC
0000T0000
Year
Range

VI
#
000NN00
Prob
Cum
T0000
PS
Cum
T0000
PS
Max

T
S


Notes for Today's Latest Risk Assessments
2008 LW16NEODyS13542017-2087106.71e-07-3.20-3.640NEODyS: "Based on 15 optical observations (of which 0 are rejected as outliers) from 2008/06/15.382 to 2008/06/16.598."
JPL Sentry13532017-21071311.1e-06-2.85-3.170JPL: "Analysis based on 15 observations spanning 1.2157 days (2008-Jun-15.38141 to 2008-Jun-16.59712)." Diameter approximately 0.411 km. from mean, weighted H=19.6.
2008 LV16NEODyS13542011-20871951.49e-06-2.74-3.450NEODyS: "Based on 19 optical observations (of which 0 are rejected as outliers) from 2008/06/15.381 to 2008/06/16.603."
JPL Sentry13532011-21072331.6e-06-2.72-3.410JPL: "Analysis based on 19 observations spanning 1.2226 days (2008-Jun-15.3798 to 2008-Jun-16.602388)." Diameter approximately 0.362 km. from mean, weighted H=19.9.
2008 LANEODyS13542037-2088183.5e-05-3.73-4.090NEODyS: "Based on 55 optical observations (of which 0 are rejected as outliers) from 2008/06/01.170 to 2008/06/11.233."
JPL Sentry13532027-2093213.4e-05-3.74-4.110JPL: "Analysis based on 55 observations spanning 10.063 days (2008-Jun-01.16922 to 2008-Jun-11.23216)." Diameter approximately 0.076 km. from mean, weighted H=23.2.

Legend: VI# = VI count, Prob Cum = cumulative probability, PS Cum/Max = cumulative/maximum Palermo Scale, TS = Torino Scale

An impact solution, also known as a "virtual impactor" (VI), is not a prediction but rather a possibility derived from a variant orbit calculation that cannot be eliminated yet based on the existing data. Elimination can come quickly with just a little further observation or may take weeks or months, sometimes years. Once superceded or eliminated, a former impact solution has zero relevance to an object's risk. See Jon Giorgini's "Understanding Risk Pages" to learn more.

Chronology  on 17 June '08

Times are UTC for when items were noted or added by The Tracking News.

1619Grabbed MPEC 2008-M10 - Comets C/2008 H9, 2008 J10, 2008 J11, 2008 J12 (SOHO) - see above
Grabbed MPEC 2008-M11 - Comets C/2008 J13, 2008 J14, 2008 J15, 2008 J16 (SOHO) - see above
1354Noted that NEODyS has updated its 2008 LA risk assessment - see above
1353Noted that JPL Sentry has updated its 2008 LA risk assessment - see above
Noted that JPL Sentry has updated its 2008 LV16 risk assessment - see above
Noted that NEODyS has posted 2008 LV16 as an impact risk - see above
Noted that JPL Sentry has updated its 2008 LW16 risk assessment - see above
Noted that NEODyS has posted 2008 LW16 as an impact risk - see above
Grabbed MPEC 2008-M09 - Daily Orbit Update - see above